2018history

1A	1B	MS
1.0 à 2.0 Q1 Option C and D are changed Q9 Option A  oxidizing agent  undergoes reduction Q20 option (3) geometrical stereoisomer		1.0 à 2.0 Q1  B  D    Q18 B  D              Explanation heptana e-2,4,6-triol Q23  B   A